A Benthic Terrain Classification Scheme for American Samoa
A Benthic Terrain Classification Scheme for American Samoa
A Benthic Terrain Classification Scheme for American Samoa
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<strong>Classification</strong> <strong>Scheme</strong> <strong>for</strong> Structures<br />
A surficial characteristic of the seafloor based on a BPI value range at a combined<br />
fine scale and broad scale, on slope values and on depth.<br />
Figure 11 Structures <strong>for</strong> Fagatele Bay National Marine Fisheries.<br />
1. Narrow depression - A depression where both fine and broad features within<br />
the terrain are lower than their surroundings<br />
2. Local depression on flat - A fine scale depression within a broader flat terrain<br />
3. Lateral midslope depression - fine scale depression that laterally incises a slope<br />
4. Depression on crest - A fine scale depression within a crested terrain<br />
5. Broad depression with an open bottom - A broad scale depression with a U-<br />
shape where any nested, fine scale features are flat or have constant slope<br />
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